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Compost Classification and Specifications

Compost is not soil and soil is not compost. When evaluating true compost products, the fact that there are several types of compost products available must be considered. The type of use desired, methods of application and incorporation available, soil characteristics at the application site, and site topography must all be considered to select the most beneficial class of compost.

Class IV Compost

Requirements to meet Class IV Standards

ANALYTICAL

Minimum Stability Indicator (Respirometry)

Unstable

Soluble Salts

N/A

pH

N/A

Ag Index

N/A

Maturity Indicators

N/A

Tested for Clopyralid

N/A.

Bulk Density

N/A

% Inorganics

N/A

Moisture

N/A

Particle Size Distribution

N/A

Primary Nutrients

Reported on submittal documentation.

Secondary Nutrients

Reported on submittal documentation.

Trace Elements

Reported on submittal documentation.

Format of Analytical Data

N/A

Organic Matter per Cubic Yard

Reported on submittal documentation, but no less than 200 pounds per cubic yard.

Chemical Contaminants

N/A

Pathogens

N/A

 

MANUFACTURING

Minimum Manufacturing / Production Requirement

The manufacturer of the product should meet a level 2 requirements.

 

APPLICATION / RISK

Applications

Agriculture.

Risk Factor Relating to Plant Germination and Health

High.

Incorporation Notes

Cannot be used as a high percentage of the soil profile. Incorporation in top 10" or more recommended.